Hagfish and lamprey Hox genes reveal conservation of temporal colinearity in vertebrates
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چکیده
منابع مشابه
Hagfish and lancelet fibrillar collagens reveal that type II collagen-based cartilage evolved in stem vertebrates.
The origin of vertebrates was defined by evolution of a skeleton; however, little is known about the developmental mechanisms responsible for this landmark evolutionary innovation. In jawed vertebrates, cartilage matrix consists predominantly of type II collagen (Col2alpha1), whereas that of jawless fishes has long been thought to be noncollagenous. We recently showed that Col2alpha1 is present...
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Hox genes code for transcription factors that play a major role in the development of all animal phyla. In invertebrates these genes usually occur as tightly linked cluster, with a few exceptions where the clusters have been dissolved. Only in vertebrates multiple clusters have been demonstrated which arose by duplication from a single ancestral cluster. This history of Hox cluster duplications...
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The Hox cluster genes encode a family of transcriptions factors that contain the homeodomain and determine the anteroposterior positional values in a wide range of metazoan, from nematodes to vertebrates. The genomic organisation of these genes is colinear with their expression domains in development (Duboule and Dolle, 1989). In contrast, during axolotl limb regeneration (Gardiner et a1.1995) ...
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Lampreys and hagfish, which together are known as the cyclostomes or 'agnathans', are the only surviving lineages of jawless fish. They diverged early in vertebrate evolution, before the origin of the hinged jaws that are characteristic of gnathostome (jawed) vertebrates and before the evolution of paired appendages. However, they do share numerous characteristics with jawed vertebrates. Studie...
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During mammalian fetal development, axial structures acquire their specifications through the action of the Hox gene family of transcription factors (for review, see Krumlauf 1994). These are 39 such genes that are responsible for giving spatially restricted cues in a variety of embryonic derivatives, from the neural tube to the intestinal tract. In presomitic mesoderm, for example, level-speci...
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ژورنال
عنوان ژورنال: Nature Ecology & Evolution
سال: 2018
ISSN: 2397-334X
DOI: 10.1038/s41559-018-0526-2